CN107767808B - Display panel driving method, display driving circuit and display device - Google Patents
Display panel driving method, display driving circuit and display device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0205—Simultaneous scanning of several lines in flat panels
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- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
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- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
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Abstract
The invention discloses a driving method, a display driving circuit and a display device of a display panel.A data driving chip receives an image to be displayed sent by a graphic processor, and controls sub-pixels of each row containing a high-definition display area in the connected display panel to carry out line-by-line scanning according to the position of the high-definition display area in the image to be displayed so as to meet the requirement of imaging clear display of the high-definition display area; meanwhile, the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area in the image to be displayed; n is an even number greater than 1, so that the number of the whole scanning lines displayed in each frame is effectively reduced, and the scanning time of each frame can be saved; under the condition of equal scanning time of each frame, the charging time of the display panel can be increased, so that the requirements of high-speed and low-power-consumption display are met.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a driving method of a display panel, a display driving circuit, and a display device.
Background
At present, as the requirements for display resolution and refresh rate become higher and higher, the requirements for charging time of the display panel become more stringent. Especially, in the virtual reality technology (VR/AR), since real-time analysis needs to be performed on a region watched by the human eye, and then a high-definition imaging region with high visual acuity needs to be rendered for the human eye, in order to achieve a good virtual reality display effect, the requirements on the display resolution and the refresh rate are very high, and the existing display mechanism is to scan pixels of each row in the display panel line by line, and cannot meet the requirements on the refresh rate and the display resolution.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a driving method of a display panel, a display driving circuit and a display device, so as to solve the problem of increasing the refresh rate of the display panel.
Therefore, an embodiment of the present invention provides a driving method of a display panel, including:
the data driving chip receives an image to be displayed sent by the graphic processor; the image to be displayed comprises gray scale data of a high-definition display area and a low-definition display area;
the data driving chip controls sub-pixels of each row containing the high-definition display area in the connected display panel to perform progressive scanning according to the position of the high-definition display area;
the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area; wherein N is an even number greater than 1.
In a possible implementation manner, in the driving method provided in an embodiment of the present invention, the controlling, by the data driving chip, each row of sub-pixels in the display panel, which only includes the low-definition display area, to perform N-row simultaneous scanning further includes:
the data driving chip inputs the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in every N rows of sub-pixels only comprising a low-definition display area.
In a possible implementation manner, in the driving method provided by the embodiment of the present invention, positions of X sub-pixels in a column direction between the sub-pixels in every two adjacent rows of the sub-pixels in the display panel are staggered, where 0< X <1, and display colors of each sub-pixel are different from those of the adjacent sub-pixels;
the data driving chip inputs the same gray scale data to each sub-pixel with the same display color connected with the same data line in every N rows of sub-pixels only including a low-definition display area, and also comprises:
and the data driving chip adjusts and outputs corresponding gray scale data according to the gray scale and weight of the adjacent sub-pixels with the same display color to the edge sub-pixels in the even-numbered rows of the sub-pixels only comprising the low-definition display area.
In a possible implementation manner, in the driving method provided in an embodiment of the present invention, the controlling, by the data driving chip, each row of sub-pixels in the connected display panel, which includes the high definition display area, to perform progressive scanning according to the position of the high definition display area specifically includes:
and the data driving chip controls each row of sub-pixels simultaneously comprising a high-definition display area and a low-definition display area to perform progressive scanning according to the position of the high-definition display area.
In a possible implementation manner, in the driving method provided in an embodiment of the present invention, the controlling, by the data driving chip, each row of sub-pixels including a high definition display area and a low definition display area simultaneously to perform progressive scanning according to the position of the high definition display area further includes:
the data driving chip inputs the same gray scale data to each sub-pixel which is connected with the same data line in the low-definition display area and has the same display color in every N rows of sub-pixels which simultaneously comprise a high-definition display area and a low-definition display area.
In a possible implementation manner, in the driving method provided in an embodiment of the present invention, the method further includes:
according to a set compression ratio, the graphics processor compresses gray scale data of a low-definition display area in an original image;
the image processor fuses the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area and sends the fused gray scale data to the data driving chip;
and the data driving chip stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
In a possible implementation manner, in the above driving method provided by the embodiment of the present invention, the compression ratio is compressed by N times in the longitudinal direction;
the data driving chip stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio, and the data driving chip specifically comprises:
and the data driving chip only transversely stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
On the other hand, an embodiment of the present invention further provides a display driving circuit, including: a data driving chip and a graphic processor; wherein,
the graphics processor is used for sending an image to be displayed to the data driving chip; the image to be displayed comprises gray scale data of a high-definition display area and a low-definition display area;
the data driving chip is connected with the graphics processor and used for controlling sub-pixels of each row containing the high-definition display area in the connected display panel to perform progressive scanning according to the position of the high-definition display area; controlling sub-pixels of each row only comprising the low-definition display area in the display panel to carry out N rows of simultaneous scanning according to the position of the low-definition display area; wherein N is an even number greater than 1.
In a possible implementation manner, in the display driving circuit provided in an embodiment of the present invention, the data driving chip specifically includes:
and the first processing module is used for inputting the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in every N rows of sub-pixels only comprising the low-definition display area.
In a possible implementation manner, in the display driving circuit provided in the embodiment of the present invention, the sub-pixels in every two adjacent rows of the sub-pixels in the display panel are staggered by X sub-pixel positions in the column direction, where 0< X <1, and the display color of each sub-pixel is different from that of each adjacent sub-pixel;
the data driving chip further comprises: an edge processing module;
and the edge processing module is used for adjusting and outputting corresponding gray scale data according to the gray scale and weight of the adjacent sub-pixels with the same display color to the edge sub-pixels in the even-numbered rows of the sub-pixels only containing the low-definition display area.
In a possible implementation manner, in the display driving circuit provided in the embodiment of the present invention, the data driving chip is specifically configured to control each row of sub-pixels that simultaneously includes a high definition display area and a low definition display area to perform progressive scanning according to the position of the high definition display area.
In a possible implementation manner, in the display driving circuit provided in an embodiment of the present invention, the data driving chip further includes:
and the second processing module is used for inputting the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in the low-definition display area in every N rows of sub-pixels simultaneously comprising a high-definition display area and a low-definition display area.
In a possible implementation manner, in the display driving circuit provided in an embodiment of the present invention, the graphics processor specifically includes: a compression module and a fusion module; wherein,
the compression module is used for compressing the gray scale data of the low-definition display area in the original image according to a set compression ratio;
the fusion module is used for fusing the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area and then sending the fused gray scale data to the data driving chip;
the data driving chip further comprises: and the stretching module is used for stretching the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
In a possible implementation manner, in the display driving circuit provided in the embodiment of the present invention, the compression ratio of the compression module is compressed by N times in the vertical direction;
and the stretching module is used for only transversely stretching the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
On the other hand, the embodiment of the invention also provides a display device, which comprises the display driving circuit and a display panel provided by the embodiment of the invention.
The embodiment of the invention has the beneficial effects that:
according to the driving method, the display driving circuit and the display device of the display panel, after the data driving chip receives the image to be displayed sent by the graphic processor, according to the position of the high-definition display area in the image to be displayed, each row of sub-pixels containing the high-definition display area in the connected display panel are controlled to perform line-by-line scanning so as to meet the requirement of imaging clear display of the high-definition display area; meanwhile, the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area in the image to be displayed; n is an even number greater than 1, so that the number of the whole scanning lines displayed in each frame is effectively reduced, and the scanning time of each frame can be saved; under the condition of equal scanning time of each frame, the charging time of the display panel can be increased, so that the requirements of high-speed and low-power-consumption display are met.
Drawings
Fig. 1 is a flowchart of a driving method of a display panel according to an embodiment of the invention;
fig. 2 is a timing diagram of clock signals in the driving method according to the embodiment of the invention;
fig. 3 is a schematic pixel arrangement diagram of a display panel to which the driving method according to the embodiment of the invention is applied;
fig. 4 is another schematic pixel arrangement diagram of a display panel to which the driving method according to the embodiment of the invention is applied;
fig. 5 is a schematic distribution diagram of a high-definition display area and a low-definition display area of a display panel in the driving method according to the embodiment of the invention;
FIG. 6 is another flowchart of a driving method of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a work flow of a graphics processor in the driving method according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating a processing flow of gray scale data of a high definition display area in the driving method according to the embodiment of the invention;
FIG. 9 is a schematic view illustrating a processing flow of gray scale data of a low-definition display region in the driving method according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a display driving circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of a driving method of a display panel, a display driving circuit and a display device according to an embodiment of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The driving method of the display panel provided by the embodiment of the invention, as shown in fig. 1, specifically includes the following steps:
s101, a data driving chip receives an image to be displayed sent by a graphic processor; the image to be displayed comprises gray scale data of a high-definition display area and a low-definition display area;
s102, the data driving chip controls sub-pixels of each row containing the high-definition display area in a connected display panel to perform progressive scanning according to the position of the high-definition display area;
s103, controlling each row of sub-pixels only comprising the low-definition display area in the display panel to perform N rows of simultaneous scanning by the data driving chip according to the position of the low-definition display area; wherein N is an even number greater than 1.
Specifically, in the driving method of the display panel provided in the embodiment of the present invention, after the data driving chip receives the image to be displayed sent by the graphics processor, because the data driving chip controls each row of sub-pixels including the high definition display area in the connected display panel to perform line-by-line scanning according to the position of the high definition display area in the image to be displayed, it is possible to satisfy the requirement of clear imaging display in the high definition display area. In addition, the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area in the image to be displayed, wherein N is an even number greater than 1; compared with progressive scanning, the refreshing speed of a low-definition display area can be increased, so that the number of refreshing lines displayed in each frame is effectively reduced, the number of overall scanning lines displayed in each frame is effectively reduced, and the scanning time of each frame can be saved; under the condition of equal scanning time of each frame, the charging time of the display panel can be increased, so that the requirements of high-speed and low-power-consumption display are met.
Specifically, in the driving method of the display panel provided in the embodiment of the present invention, step S102 and step S103 are generally performed simultaneously, and are not in a sequential order. And there may be multiple choices for the N-line simultaneous scanning in step S103, such as two-line simultaneous scanning, four-line simultaneous scanning, or eight-line simultaneous scanning, which is not limited herein. The following description will take an example in which the data driving chip controls each row of sub-pixels including only the low-definition display region to perform four-row simultaneous scanning.
Specifically, in the driving method of the display panel provided in the embodiment of the present invention, the data driving chip controls the change of the number of scanning lines in the connected display panel in step S102 and step S103, which is mainly realized by controlling the change of the clock signal loaded to the display panel. Specifically, as shown in fig. 2 and 5, when the rows of sub-pixels including only the low-definition display regions a1 and a2 are scanned, the data driving chip may simultaneously load the same first clock signal to the clock signal terminal CLK1-4 of the display panel and simultaneously load the second clock signal opposite to the first clock signal to the clock signal terminal CLK5-8 of the display panel, so as to realize the simultaneous scanning of the rows of sub-pixels including only the low-definition display regions a1 and a2 every 4 rows. When each row of sub-pixels including the high definition display region b is scanned, as shown by a dashed line box in fig. 2, the data driving chip may sequentially load a first clock signal to the clock signal terminal CLK1-4 of the display panel, and simultaneously load a second clock signal opposite to the first clock signal of the clock signal terminal CLK1-4 to the clock signal terminal CLK5-8 of the display panel, respectively, so as to scan each row of sub-pixels including the high definition display region row by row.
Optionally, in the driving method provided in the embodiment of the present invention, while the data driving chip executes step S103 to control the sub-pixels in each row of the display panel, which only includes the low-definition display area, to perform N-row simultaneous scanning, the following steps may also be executed:
the data driving chip inputs the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in every N rows of sub-pixels only comprising a low-definition display area; that is, when N rows of sub-pixels are scanned simultaneously, one data line is turned on simultaneously with N sub-pixels in the N rows of sub-pixels, which have the same display color, and the same gray scale data is loaded to the N sub-pixels.
Specifically, the data driving chip controls each row of sub-pixels in the display panel, which only contains the low-definition display area, to perform N-row simultaneous scanning, so that the refreshing speed of the low-definition display area is increased, the refreshing line number displayed per frame is effectively reduced, the integral scanning line number displayed per frame is effectively reduced, the scanning time per frame is saved, and on the basis of increasing the charging time of the display panel, the data driving chip inputs the same gray scale data to each sub-pixel, which is connected with the same data line and has the same display color, in each N rows of sub-pixels, which only contains the low-definition display area, so that the gray scale data amount loaded by the data driving chip to the data line can be reduced, the internal data processing amount of the data driving chip is reduced, and the power consumption of the data driving chip is saved.
Optionally, in the above driving method provided by the embodiment of the present invention, the arrangement of the sub-pixels in the display panel may be multiple, for example, as shown in fig. 3, the sub-pixels may be aligned in both the row direction and the column direction, and the display color of each column of the sub-pixels is the same. As shown in fig. 4, the sub-pixels in every two adjacent rows of sub-pixels in the display panel are shifted by X sub-pixel positions in the column direction, 0< X <1, the display color of each sub-pixel is different from that of the adjacent sub-pixels, at this time, the data lines also extend from the straight line shown in fig. 3 to the broken line shown in fig. 4, and in order to ensure that one data line is connected to only the sub-pixels with the same display color, the data lines are respectively connected to the sub-pixels on both sides through the switching transistors. The pixel arrangement shown in fig. 4 can save half of the number of sub-pixels and half of the number of data lines under the condition of the same display resolution as the conventional pixel arrangement shown in fig. 3, thereby effectively reducing the process difficulty of the display panel.
Based on the pixel arrangement structure shown in fig. 4, in the driving method of the display panel provided in the embodiment of the present invention, the data driving chip inputs the same gray scale data to each sub-pixel with the same display color connected to the same data line in every N rows of sub-pixels including only the low-definition display region, and simultaneously may further perform the following steps:
the data driving chip adjusts and outputs corresponding gray scale data according to the gray scale and the weight of the adjacent sub-pixels with the same display color in the edge sub-pixels in the even-numbered rows only including the low-definition display area, namely the edge gray scale data adjustment is needed to be carried out on the left edge sub-pixel B in the even-numbered rows independently, and the gray scale data assignment of the pixels can be carried out according to the weight and the gray scale data of the three sub-pixels B adjacent to the right side and the upper and lower sides of the left edge sub-pixel B, so that the display requirements can be met.
Optionally, in the driving method provided in the embodiment of the present invention, as shown in fig. 5, since the high definition display area b is generally only in the middle of the display panel and does not cover the entire row of sub-pixels, the step S102 of the data driving chip controlling the connected display panel to perform line-by-line scanning on each row of sub-pixels including the high definition display area according to the position of the high definition display area generally includes:
the data driving chip controls each row of sub-pixels simultaneously including the high-definition display area and the low-definition display area to perform progressive scanning according to the position of the high-definition display area, that is, the data driving chip controls each row of sub-pixels simultaneously including the high-definition display area b and the low-definition display areas a3 and a4 in fig. 5 to perform progressive scanning.
Optionally, in the driving method provided in the embodiment of the present invention, the data driving chip controls each row of sub-pixels including the high definition display area and the low definition display area simultaneously to perform progressive scanning according to the position of the high definition display area, and may further perform the following steps:
the data driving chip inputs the same gray scale data to each sub-pixel with the same display color connected with the same data line in the low-definition display area in every N rows of sub-pixels simultaneously comprising the high-definition display area and the low-definition display area. As shown in fig. 5, although the low-definition display regions a3 and a4 on both sides of the high-definition display region b are also scanned line by line, four rows of pixel contents in a line buffer (line buffer) of the low-definition display regions a3 and a4 are read out by the data driving chip, and four rows of sub-images in the low-definition display regions a3 and a4 are displayed respectively, so that the amount of gray scale data loaded on the data lines by the data driving chip can be reduced, thereby reducing the internal data processing amount of the data driving chip and saving the power consumption of the data driving chip. Specifically, for the sub-pixels in the odd-numbered rows in the low-definition display regions a3 and a4, the data driver chip may directly transmit the gray scale data for display, and for the even-numbered rows in the pixel arrangement shown in fig. 4, pixel adjustment is required, and the RGB in the pixel and the gray scale data of the BRG are exchanged and then transmitted for display.
Optionally, in the driving method provided in the embodiment of the present invention, as shown in fig. 6, the method may further include the following steps:
s601, compressing the gray scale data of the low-definition display area in the original image by the graphics processor according to the set compression ratio;
s602, fusing the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area by the graphics processor and then sending the fused gray scale data to the data driving chip;
and S603, the data driving chip stretches the received gray scale data of the low-definition display area according to the number and the compression ratio of the data lines in the display panel.
Specifically, through the steps S601 and S602 executed in the graphics processor, while data display in a high-definition display area is ensured, the amount of data transmitted from the graphics processor to the data driving chip can be reduced, so as to increase the data transmission speed, thereby supporting a higher image output frame frequency, reducing the output delay of the GPU, and improving the user experience.
Optionally, in the driving method provided in the embodiment of the present invention, in the step S601, the compression ratio is compressed by N times in the longitudinal direction, and the compression ratio in the transverse direction may be M times; for example, as shown in fig. 7, the resolution of the original image received by the graphics processor is 4320 × 4800, the resolution of the high-definition display area b is determined to be 1440 × 1600, the resolution of the low-definition display area a is compressed according to a compression ratio of four times in the vertical direction and three times in the horizontal direction, and the resolution of the compressed low-definition display area a is 1440 × 1200. After the step S602 is executed, the grayscale data of the low-definition display area a and the grayscale data of the high-definition display area b are fused, and the resolution is 1440 × 2800. Correspondingly, the step S603 includes that the data driving chip stretches the received gray scale data of the low-definition display area according to the number and the compression ratio of the data lines in the display panel, and specifically includes: and the data driving chip only transversely stretches the received gray scale data of the low-definition display area according to the number and the compression ratio of the data lines in the display panel.
Taking the pixel arrangement shown in fig. 3 as an example, the number of the data lines is consistent with the number of columns of the original image, and the data driving chip needs to perform horizontal stretching by M times, that is, needs to perform horizontal stretching by 3 times, that is, gray scale data of three sub-pixels is generated according to one sub-pixel in one row.
Taking the pixel arrangement shown in fig. 4 as an example, the number of data lines is reduced by half compared with the number of columns of the original image, and the data driving chip needs to perform horizontal stretching by M/2 times, that is, needs to perform horizontal stretching by 1.5 times, that is, gray scale data of three sub-pixels are generated according to two sub-pixels in one row. Fig. 9 shows a process of performing 1.5 times of horizontal stretching on four pixel units in the low-definition display region to obtain gray scale data of six pixel units, and then performing gray scale data assignment according to the actual pixel arrangement of the display panel, so that N-4 rows of sub-pixels use the same row of gray scale data to perform driving display. Fig. 8 shows the gray-scale data of six rows of pixel units in the high-definition display area, and the gray-scale data is assigned according to the actual pixel arrangement of the display panel.
Based on the same inventive concept, embodiments of the present invention further provide the display driving circuit, and since the principle of the display driving circuit for solving the problem is similar to the driving method, the implementation of the display driving circuit can refer to the implementation of the driving method, and repeated details are not repeated.
Specifically, an embodiment of the present invention provides a display driving circuit, as shown in fig. 10, including: a data driving chip 10 and a graphic processor 20; wherein,
a graphic processor 20 for sending an image to be displayed to the data driving chip 10; the image to be displayed comprises gray scale data of a high-definition display area b and a low-definition display area a;
the data driving chip 10 is connected with the graphics processor 20, and the data driving chip 20 is used for controlling each row of sub-pixels containing the high-definition display area b in the connected display panel to perform progressive scanning according to the position of the high-definition display area b; controlling sub-pixels of each row only comprising the low-definition display area a in the display panel to carry out N rows of simultaneous scanning according to the position of the low-definition display area a; wherein N is an even number greater than 1.
Optionally, in the display driving circuit provided in the embodiment of the present invention, as shown in fig. 10, the data driving chip 10 specifically includes:
the first processing module 101 is configured to input the same gray scale data to each of the subpixels, which are connected to the same data line and have the same display color, in every N rows of subpixels including only the low-definition display region a.
Optionally, in the display driving circuit provided in the embodiment of the present invention, the sub-pixels in every two adjacent rows of sub-pixels in the display panel are staggered by X sub-pixel positions in the column direction, where 0< X <1, and the display color of each sub-pixel is different from that of the adjacent sub-pixels;
as shown in fig. 10, the data driving chip 10 may further include: an edge processing module 102;
the edge processing module 102 is configured to adjust and output corresponding gray scale data according to gray scales and weights of adjacent sub-pixels with the same display color for edge sub-pixels in even-numbered rows of sub-pixels including only the low-definition display region a.
Optionally, in the display driving circuit provided in the embodiment of the present invention, the data driving chip 10 is specifically configured to control each row of sub-pixels that simultaneously include the high definition display area b and the low definition display area a to perform progressive scanning according to the position of the high definition display area b.
Optionally, in the display driving circuit provided in the embodiment of the present invention, as shown in fig. 10, the data driving chip 10 may further include:
the second processing module 103 is configured to input the same gray scale data to each subpixel with the same display color connected to the same data line in the low-definition display area a in every N rows of subpixels that simultaneously include the high-definition display area b and the low-definition display area a.
Optionally, in the display driving circuit provided in the embodiment of the present invention, as shown in fig. 10, the graphics processor 20 specifically includes: a compression module 201 and a fusion module 202; wherein,
a compression module 201, configured to compress gray scale data of a low-definition display area in an original image according to a set compression ratio;
the fusion module 202 is configured to fuse the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area and send the fused gray scale data to the data driving chip;
the data driving chip 10 may further include: and the stretching module 104 is configured to stretch the received gray scale data of the low-definition display area according to the number of the data lines and the compression ratio in the display panel.
Optionally, in the display driving circuit provided in the embodiment of the present invention, the compression module 201 is longitudinally compressed by N times in the compression ratio;
and the stretching module 104 is configured to stretch only the received gray scale data of the low-definition display area in the transverse direction according to the number of the data lines and the compression ratio in the display panel.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the display driving circuit and a display panel provided by the embodiment of the invention. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can refer to the above embodiments of the display driving circuit, and repeated descriptions are omitted.
According to the driving method, the display driving circuit and the display device of the display panel, provided by the embodiment of the invention, after the data driving chip receives the image to be displayed sent by the graphic processor, each row of sub-pixels including the high-definition display area in the connected display panel are controlled to perform line-by-line scanning according to the position of the high-definition display area in the image to be displayed, so that the requirement of imaging clear display of the high-definition display area is met; meanwhile, the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area in the image to be displayed; n is an even number larger than 1, so that the number of refreshing lines displayed in each frame is effectively reduced, and under the condition of equal scanning time of each frame, the charging time of the display panel can be increased, so that the display requirements of high speed and low power consumption are met.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A method of driving a display panel, comprising:
the data driving chip receives an image to be displayed sent by the graphic processor; the image to be displayed comprises gray scale data of a high-definition display area and a low-definition display area;
the data driving chip controls sub-pixels of each row containing the high-definition display area in the connected display panel to perform progressive scanning according to the position of the high-definition display area;
the data driving chip controls sub-pixels of each row only including the low-definition display area in the display panel to perform N-row simultaneous scanning according to the position of the low-definition display area; wherein N is an even number greater than 1;
the driving method further includes:
according to a set compression ratio, the graphics processor compresses gray scale data of a low-definition display area in an original image;
the image processor fuses the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area and sends the fused gray scale data to the data driving chip;
the data driving chip stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio;
the data driving chip controls each row of sub-pixels in the display panel, which only includes a low-definition display area, to perform N-row simultaneous scanning, and the method further includes:
the data driving chip inputs the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in every N rows of sub-pixels only comprising a low-definition display area;
the display panel is characterized in that the positions of X sub-pixels are staggered in the column direction between every two adjacent rows of sub-pixels, 0< X <1, and the display color of each sub-pixel is different from that of each adjacent sub-pixel;
the data driving chip inputs the same gray scale data to each sub-pixel with the same display color connected with the same data line in every N rows of sub-pixels only including a low-definition display area, and also comprises:
the data driving chip adjusts and outputs corresponding gray scale data according to the gray scale and weight of adjacent sub-pixels with the same display color for the edge sub-pixels in the even-numbered rows of sub-pixels only comprising the low-definition display area;
the data driving chip controls each row of sub-pixels containing the high-definition display area in the connected display panel to perform progressive scanning according to the position of the high-definition display area, and the method specifically comprises the following steps:
the data driving chip controls sub-pixels of each row simultaneously including a high-definition display area and a low-definition display area to perform progressive scanning according to the position of the high-definition display area;
the data driving chip controls each row of sub-pixels simultaneously including a high-definition display area and a low-definition display area to perform progressive scanning according to the position of the high-definition display area, and also comprises:
the data driving chip inputs the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in each N rows of sub-pixels simultaneously comprising a high-definition display area and a low-definition display area;
the same gray scale data is input to each sub-pixel which is connected with the same data line and has the same display color in the low-definition display area, and the method comprises the following steps:
aiming at the condition that the sub-pixels in every two adjacent rows of the sub-pixels in the display panel are staggered in the column direction by X sub-pixel positions, for the sub-pixels in odd rows in a low-definition display area, the data driving chip sends gray scale data to display, for the pixels in even rows, the gray scale data of RGB and BRG in the pixels are exchanged and then sent to display.
2. The driving method according to claim 1, wherein the compression ratio is a longitudinal compression by a factor of N;
the data driving chip stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio, and the data driving chip specifically comprises:
and the data driving chip only transversely stretches the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
3. A display driving circuit, comprising: a data driving chip and a graphic processor; wherein,
the graphics processor is used for sending an image to be displayed to the data driving chip; the image to be displayed comprises gray scale data of a high-definition display area and a low-definition display area;
the data driving chip is connected with the graphics processor and used for controlling sub-pixels of each row containing the high-definition display area in the connected display panel to perform progressive scanning according to the position of the high-definition display area; controlling sub-pixels of each row only comprising the low-definition display area in the display panel to carry out N rows of simultaneous scanning according to the position of the low-definition display area; wherein N is an even number greater than 1;
the graphics processor specifically includes: a compression module and a fusion module; wherein,
the compression module is used for compressing the gray scale data of the low-definition display area in the original image according to a set compression ratio;
the fusion module is used for fusing the compressed gray scale data of the low-definition display area and the compressed gray scale data of the high-definition display area and then sending the fused gray scale data to the data driving chip;
the data driving chip further comprises: the stretching module is used for stretching the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio;
the data driving chip specifically comprises:
the first processing module is used for inputting the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in every N rows of sub-pixels only comprising the low-definition display area;
the display panel is characterized in that the positions of X sub-pixels are staggered in the column direction between every two adjacent rows of sub-pixels, 0< X <1, and the display color of each sub-pixel is different from that of each adjacent sub-pixel;
the data driving chip further comprises: an edge processing module;
the edge processing module is used for adjusting and outputting corresponding gray scale data according to the gray scale and weight of adjacent sub-pixels with the same display color for the edge sub-pixels in the even-numbered rows of sub-pixels only containing the low-definition display area;
the data driving chip is specifically used for controlling sub-pixels of each row simultaneously including a high-definition display area and a low-definition display area to perform progressive scanning according to the position of the high-definition display area;
the data driving chip further comprises:
the second processing module is used for inputting the same gray scale data to each sub-pixel which is connected with the same data line and has the same display color in the low-definition display area in every N rows of sub-pixels which simultaneously comprise a high-definition display area and a low-definition display area;
the second processing module is specifically configured to:
aiming at the condition that the sub-pixels in every two adjacent rows of the sub-pixels in the display panel are staggered in the column direction by X sub-pixel positions, for the sub-pixels in odd rows in a low-definition display area, the data driving chip sends gray scale data to display, for the pixels in even rows, the gray scale data of RGB and BRG in the pixels are exchanged and then sent to display.
4. The display driving circuit according to claim 3, wherein the compression ratio of the compression module is compressed by N times in a vertical direction;
and the stretching module is used for only transversely stretching the received gray scale data of the low-definition display area according to the number of the data lines in the display panel and the compression ratio.
5. A display device comprising the display driver circuit according to any one of claims 3 to 4, and a display panel.
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| CN201711115424.2A CN107767808B (en) | 2017-11-13 | 2017-11-13 | Display panel driving method, display driving circuit and display device |
| US16/332,947 US11176864B2 (en) | 2017-11-13 | 2018-08-29 | Method for driving a display panel, display drive circuit and display device |
| PCT/CN2018/103090 WO2019091193A1 (en) | 2017-11-13 | 2018-08-29 | Driving method for display panel, display driving circuit and display apparatus |
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| DE102017129795B4 (en) * | 2017-06-30 | 2024-08-08 | Lg Display Co., Ltd. | DISPLAY DEVICE AND GATE DRIVER CIRCUIT THEREOF, DRIVING METHOD AND VIRTUAL REALITY DEVICE |
| CN107767808B (en) * | 2017-11-13 | 2020-09-08 | 北京京东方光电科技有限公司 | Display panel driving method, display driving circuit and display device |
| CN108597435B (en) * | 2018-04-28 | 2021-10-29 | 京东方科技集团股份有限公司 | Method for controlling display of display panel, device thereof and display device |
| CN109064976A (en) * | 2018-11-01 | 2018-12-21 | 京东方科技集团股份有限公司 | Driving method, driving circuit and the display device of display panel |
| CN109658900B (en) * | 2019-02-28 | 2021-01-01 | 京东方科技集团股份有限公司 | Driving method, compensation circuit and driving device of display panel and display device |
| CN111199713A (en) * | 2020-03-05 | 2020-05-26 | 苹果公司 | Display with multiple refresh rate modes |
| CN115210797A (en) * | 2020-12-22 | 2022-10-18 | 京东方科技集团股份有限公司 | Display device and display device driving method |
| KR20220128549A (en) * | 2021-03-12 | 2022-09-21 | 삼성디스플레이 주식회사 | Data driver and display device the data driver |
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| CN114217691B (en) * | 2021-12-13 | 2023-12-26 | 京东方科技集团股份有限公司 | Display driving method and device, electronic equipment and intelligent display system |
| CN114783360B (en) * | 2022-04-20 | 2024-09-03 | 京东方科技集团股份有限公司 | Gate driving control method and system, display driving system and display device |
| WO2023240522A1 (en) * | 2022-06-16 | 2023-12-21 | 京东方科技集团股份有限公司 | Display panel assembly and driving method therefor, and display apparatus |
| TW202406325A (en) * | 2022-07-27 | 2024-02-01 | 睿生光電股份有限公司 | Image signal adjustment method of detection device |
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| US20210174724A1 (en) | 2021-06-10 |
| US11176864B2 (en) | 2021-11-16 |
| CN107767808A (en) | 2018-03-06 |
| WO2019091193A1 (en) | 2019-05-16 |
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